Bangladesh Nationalist Party secretary general Mirza Fakhrul Islam Alamgir returned home from London on Thursday, after completing a 10-day visit.
Fakhrul, accompanied by his wife Rahat Ara Begum, arrived at Hazrat Shahjalal International Airport on a Biman Bangladesh Airlines flight at 12:45pm, said BNP media cell member Sayrul Kabir Khan.
During his stay in London, Fakhrul met BNP acting chairman Tarique Rahman to discuss political affairs.
He also participated in several party programmess and exchanged views with local journalists.
Sources within the party said Fakhrul and Tarique Rahman, along with local leaders, discussed the potential visit of BNP chairperson Khaleda Zia to London for medical treatment.
The 79-year-old former prime minister is expected to first receive treatment in the United Kingdom, and may then travel to the United States for further care.
The BNP has made all necessary arrangements for her to receive specialised treatment at an advanced medical center abroad.